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    Light source apparatus and its control method
    2.
    发明授权
    Light source apparatus and its control method 失效
    光源装置及其控制方法

    公开(公告)号：US07010006B2

    公开(公告)日：2006-03-07

    申请号：US10465948

    申请日：2002-06-21

    申请人： Ken'ichi Kasazumi ,  Yasuo Kitaoka ,  Tosifumi Yokoyama ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Hisashi Senga ,  Shigeru Furumiya ,  Hiromichi Ishibashi

    发明人： Ken'ichi Kasazumi ,  Yasuo Kitaoka ,  Tosifumi Yokoyama ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Hisashi Senga ,  Shigeru Furumiya ,  Hiromichi Ishibashi

    IPC分类号： H01S3/13 ,  H01S3/10

    CPC分类号： H01S5/0687 ,  G02F1/37 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/06256 ,  H01S5/0683

    摘要： A light source device can attain a stable output of a harmonic even when there occurs a change in the ambient temperature or fluctuation in the output power. The light source device is provided with a semiconductor laser source (4), an optical waveguide-type QPM-SHG device (5) for generating a second harmonic from light emitted from the semiconductor laser source (4), a wavelength control means (7) for controlling a wavelength of light emitted from the semiconductor laser source (4), a means for slightly fluctuating wavelength (8) for changing a wavelength of light emitted from the semiconductor laser source (4) and a means for detecting a change in output light power of the optical waveguide-type QPM-SHG device (5) that occurs when a wavelength of light emitted from the semiconductor laser source (4) is changed. In this case, a wavelength of light emitted from the semiconductor laser source (4) is controlled to an optimum wavelength of the optical waveguide-type QPM-SHG device (5) based on a change in output light power of the optical waveguide-type QPM-SHG device (5) that occurs when a wavelength of light emitted from the semiconductor laser source (4) is changed.

    摘要翻译： 即使发生环境温度的变化或输出功率的波动，光源装置也可以获得稳定的谐波输出。 光源装置设置有半导体激光源（4），用于从半导体激光源（4）发射的光产生二次谐波的光波导型QPM-SHG器件（5），波长控制装置（7） ），用于控制从半导体激光源（4）发射的光的波长，用于稍微波动的用于改变从半导体激光源（4）发射的光的波长的波长（8）的装置和用于检测输出变化的装置 当从半导体激光源（4）发射的光的波长改变时发生的光波导型QPM-SHG器件（5）的光功率变化。 在这种情况下，基于光波导型的输出光功率的变化，从半导体激光源（4）发射的光的波长被控制到光波导型QPM-SHG器件（5）的最佳波长 当从半导体激光源（4）发射的光的波长改变时发生的QPM-SHG器件（5）。

    Optical pickup and optical information recording/reproducing device
    4.
    发明授权
    Optical pickup and optical information recording/reproducing device 失效
    光学拾取和光学信息记录/再现装置

    公开(公告)号：US07154837B2

    公开(公告)日：2006-12-26

    申请号：US09870095

    申请日：2001-05-30

    申请人： Ken'ichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

    发明人： Ken'ichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

    IPC分类号： G11B7/135

    CPC分类号： B82Y10/00 ,  G02F2203/18 ,  G11B7/1369 ,  G11B7/1381

    摘要： An optical pickup and an optical information recording/reproducing device are provided, each of which is capable of forming a super-resolution spot to conduct micro-mark recording, and does not undergo signal degradation due to an increased sidelobe in a reproducing operation. A variable phase filter having three regions to produce a phase difference in a radial direction is used, to provide a phase difference of π between the center region and the side regions in a recording operation, so that a super-resolution spot is formed on a recording layer of the optical disk. In a reproducing operation, a phase difference is nullified between the regions of the variable phase filter, so that a normal light spot at a diffraction limit having a smaller sidelobe is formed. The variable phase filter can be formed with a homogeneous-alignment liquid crystal element.

    摘要翻译： 提供了一种光学拾取器和光学信息记录/再现装置，每个光学拾取器和光学信息记录/再现装置能够形成超分辨率点以进行微标记记录，并且由于再现操作中的旁瓣增加而不会发生信号劣化。 使用具有在径向上产生相位差的三个区域的可变相位滤波器，以在记录操作中提供中心区域和侧面区域之间的pi的相位差，使得在 记录层的光盘。 在再现操作中，可变相位滤波器的区域之间的相位差无效，从而形成具有较小旁瓣的衍射极限处的正常光斑。 可变相位滤波器可以由均匀取向的液晶元件形成。

    Optical waveguide device and light source and optical apparatus using the same
    5.
    发明授权
    Optical waveguide device and light source and optical apparatus using the same 有权
    光波导器件和光源及其使用的光学器件

    公开(公告)号：US06829080B2

    公开(公告)日：2004-12-07

    申请号：US10123892

    申请日：2002-04-16

    申请人： Akihiro Morikawa ,  Ken'ichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

    发明人： Akihiro Morikawa ,  Ken'ichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

    IPC分类号： G02F202

    CPC分类号： G11B7/126 ,  G02B6/122 ,  G02B2006/12126 ,  G02F1/377 ,  H01S5/0092 ,  H01S5/02248

    摘要： An optical waveguide device is provided that can reduce external interference noise. The optical waveguide device includes a substrate, an optical waveguide formed on the substrate, a periodic polarization inversion region formed on the optical waveguide, and an optical thin film formed in a portion of the optical waveguide. The optical waveguide (refractive index: N2) and the optical thin film (refractive index: N1) differ in refractive index dispersion, and the magnitude relationship between the refractive indexes is reversed depending on wavelength. The relationship N1>N2 is established for light having a shorter wavelength, while the relationship N2>N1 is established for light having a longer wavelength.

    摘要翻译： 提供了可以减少外部干扰噪声的光波导装置。 光波导器件包括衬底，形成在衬底上的光波导，形成在光波导上的周期性偏振反转区域和形成在光波导的一部分中的光学薄膜。 光波导（折射率：N2）和光学薄膜（折射率：N1）的折射率色散不同，折射率之间的大小关系根据波长而反转。 对于具有较短波长的光建立关系N1> N2，而对于具有较长波长的光则建立关系N2> N1。

    Optical waveguide device and coherent light source and optical apparatus using the same
    6.
    发明授权
    Optical waveguide device and coherent light source and optical apparatus using the same 有权
    光波导器件和相干光源及使用其的光学器件

    公开(公告)号：US06785457B2

    公开(公告)日：2004-08-31

    申请号：US10211881

    申请日：2002-08-01

    申请人： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Ken'ichi Kasazumi ,  Yasuo Kitaoka

    发明人： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Ken'ichi Kasazumi ,  Yasuo Kitaoka

    IPC分类号： G02F202

    CPC分类号： G02B6/125 ,  G02B6/42 ,  G02B6/4207 ,  G02B2006/12119 ,  G02F1/3775 ,  G11B7/125 ,  H01S5/026

    摘要： The present invention aims to simplify a mass production process of an optical waveguide device and to reduce cost as well as noise. The optical waveguide device includes an optical waveguide whose entrance end face and exit end face are substantially parallel to each other. A SHG device is mass-produced by optically polishing an optical material substrate with a large area and then cutting the substrate. This method can mass-produce the optical waveguide devices having a uniform device length. The angle between the exit end face of the optical waveguide and the direction of an optical axis of the optical waveguide at the exit end face is not 90°, thereby reducing return light from the exit end face.

    摘要翻译： 本发明旨在简化光波导器件的批量生产工艺，并降低成本和噪声。 光波导装置包括入射端面和出射端面基本上彼此平行的光波导。 通过以大面积光学研磨光学材料基板然后切割基板来批量生产SHG器件。 该方法可以批量生产具有均匀器件长度的光波导器件。 光波导的出射端面与出射端面的光波导的光轴方向之间的角度不是90°，从而减少了从出射端面返回的光。

    Laser projector
    7.
    发明授权
    Laser projector 有权
    激光投影机

    公开(公告)号：US07416306B2

    公开(公告)日：2008-08-26

    申请号：US10559460

    申请日：2004-06-04

    申请人： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Ken'ichi Kasazumi

    发明人： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Ken'ichi Kasazumi

    IPC分类号： G03B21/00 ,  G03B21/26 ,  G03B21/28 ,  G03B21/56 ,  G03H1/02 ,  G02B5/32 ,  G02B27/14 ,  G02F1/1335 ,  H04N5/74

    CPC分类号： G03B33/16 ,  G03B21/204 ,  G03B21/567 ,  H04N9/3129

    摘要： A reflection-type laser projector (100) projects modulated laser beams outputted from a laser projection unit (40), on a screen, wherein a reflector (112) as a constituent of the screen (110) has reflection characteristics of reflecting, among the incident light, only laser beams of three colors of red, blue, and green, which are projected from the laser projection unit (40) and light in the neighboring wavelength band, and transmitting light in other wavelength bands, thereby preventing pictures on the screen (110) from becoming hard to be seen due to effects of indoor illumination or light from outdoors.

    摘要翻译： 反射型激光投影仪（100）将从激光投影单元（40）输出的调制激光投射到屏幕上，其中作为屏幕（110）的组成部分的反射器（112）具有反射特性， 入射光，只有从激光投影单元（40）投射的三种颜色的红色，蓝色和绿色的激光束和相邻波长带中的光，并且在其他波长带中透射光，从而防止屏幕上的图像 （110）由于室内照明或来自户外的光的影响而变得难以看见。

    Laser projector
    8.
    发明申请
    Laser projector 有权
    激光投影机

    公开(公告)号：US20060158725A1

    公开(公告)日：2006-07-20

    申请号：US10559460

    申请日：2004-06-04

    申请人： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Ken'ichi Kasazumi

    发明人： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Ken'ichi Kasazumi

    IPC分类号： G03B21/56

    CPC分类号： G03B33/16 ,  G03B21/204 ,  G03B21/567 ,  H04N9/3129

    摘要： The present invention provides a reflection-type laser projector (100) which projects modulated laser beams outputted from a laser projection unit (40), on a screen, wherein a reflector (112) as a constituent of the screen (110) has reflection characteristics of reflecting, among the incident light, only laser beams of three colors of red, blue, and green, which are projected from the laser projection unit (40) and light in the neighboring wavelength band, and transmitting light in other wavelength band, thereby preventing pictures on the screen (110) from becoming hard to be seen due to effects of indoor illumination or light from outdoors.

    摘要翻译： 本发明提供了一种反射式激光投影仪（100），其将从激光投影单元（40）输出的调制激光束投射在屏幕上，其中作为屏幕（110）的组成部分的反射器（112）具有反射特性 在入射光中仅反射从激光投影单元（40）投射的红色，蓝色和绿色的三种颜色的激光，以及相邻波长带中的光，并且透射其他波段的光，从而 防止屏幕（110）上的图像由于室内照明或来自室外的光的影响而变得难以看出。